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/**************************************************************************
*
* Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#include "pipe/p_util.h"
#include "draw/draw_context.h"
#include "draw/draw_private.h"
#include "draw/draw_vbuf.h"
#include "draw/draw_vertex.h"
#include "draw/draw_pt.h"
#include "translate/translate.h"
#include "translate/translate_cache.h"
struct pt_fetch {
struct draw_context *draw;
struct translate *translate;
unsigned vertex_size;
boolean need_edgeflags;
struct translate_cache *cache;
};
/* Perform the fetch from API vertex elements & vertex buffers, to a
* contiguous set of float[4] attributes as required for the
* vertex_shader->run_linear() method.
*
* This is used in all cases except pure passthrough
* (draw_pt_fetch_emit.c) which has its own version to translate
* directly to hw vertices.
*
*/
void draw_pt_fetch_prepare( struct pt_fetch *fetch,
unsigned vertex_size )
{
struct draw_context *draw = fetch->draw;
unsigned i, nr = 0;
unsigned dst_offset = 0;
struct translate_key key;
unsigned keysize;
fetch->vertex_size = vertex_size;
keysize = (2*4 +
(draw->pt.nr_vertex_elements + 1) * sizeof(key.element[0]));
/* Always emit/leave space for a vertex header.
*
* It's worth considering whether the vertex headers should contain
* a pointer to the 'data', rather than having it inline.
* Something to look at after we've fully switched over to the pt
* paths.
*/
{
/* Need to set header->vertex_id = 0xffff somehow.
*/
key.element[nr].input_format = PIPE_FORMAT_R32_FLOAT;
key.element[nr].input_buffer = draw->pt.nr_vertex_buffers;
key.element[nr].input_offset = 0;
key.element[nr].output_format = PIPE_FORMAT_R32_FLOAT;
key.element[nr].output_offset = dst_offset;
dst_offset += 1 * sizeof(float);
nr++;
/* Just leave the clip[] array untouched.
*/
dst_offset += 4 * sizeof(float);
}
for (i = 0; i < draw->pt.nr_vertex_elements; i++) {
key.element[nr].input_format = draw->pt.vertex_element[i].src_format;
key.element[nr].input_buffer = draw->pt.vertex_element[i].vertex_buffer_index;
key.element[nr].input_offset = draw->pt.vertex_element[i].src_offset;
key.element[nr].output_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
key.element[nr].output_offset = dst_offset;
dst_offset += 4 * sizeof(float);
nr++;
}
assert(dst_offset <= vertex_size);
key.nr_elements = nr;
key.output_stride = vertex_size;
if (!fetch->translate ||
memcmp(&fetch->translate->key, &key, keysize) != 0)
{
memset((char *)&key + keysize, 0, sizeof(key) - keysize);
fetch->translate = translate_cache_find(fetch->cache, &key);
{
static struct vertex_header vh = { 0, 1, 0, 0xffff };
fetch->translate->set_buffer(fetch->translate,
draw->pt.nr_vertex_buffers,
&vh,
0);
}
}
fetch->need_edgeflags = ((draw->rasterizer->fill_cw != PIPE_POLYGON_MODE_FILL ||
draw->rasterizer->fill_ccw != PIPE_POLYGON_MODE_FILL) &&
draw->pt.user.edgeflag);
}
void draw_pt_fetch_run( struct pt_fetch *fetch,
const unsigned *elts,
unsigned count,
char *verts )
{
struct draw_context *draw = fetch->draw;
struct translate *translate = fetch->translate;
unsigned i;
for (i = 0; i < draw->pt.nr_vertex_buffers; i++) {
translate->set_buffer(translate,
i,
((char *)draw->pt.user.vbuffer[i] +
draw->pt.vertex_buffer[i].buffer_offset),
draw->pt.vertex_buffer[i].pitch );
}
translate->run_elts( translate,
elts,
count,
verts );
/* Edgeflags are hard to fit into a translate program, populate
* them separately if required. In the setup above they are
* defaulted to one, so only need this if there is reason to change
* that default:
*/
if (fetch->need_edgeflags) {
for (i = 0; i < count; i++) {
struct vertex_header *vh = (struct vertex_header *)(verts + i * fetch->vertex_size);
vh->edgeflag = draw_pt_get_edgeflag( draw, elts[i] );
}
}
}
struct pt_fetch *draw_pt_fetch_create( struct draw_context *draw )
{
struct pt_fetch *fetch = CALLOC_STRUCT(pt_fetch);
if (!fetch)
return NULL;
fetch->draw = draw;
fetch->cache = translate_cache_create();
if (!fetch->cache) {
FREE(fetch);
return NULL;
}
return fetch;
}
void draw_pt_fetch_destroy( struct pt_fetch *fetch )
{
translate_cache_destroy(fetch->cache);
FREE(fetch);
}
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